Report that kernel is tainted if there was an OOPS

[pandora-kernel.git] / kernel / cpuset.c

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 88b416d..824b1c0 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -981,10 +981,10 @@ static int update_nodemask(struct cpuset *cs, char *buf)
                mmarray = kmalloc(ntasks * sizeof(*mmarray), GFP_KERNEL);
                if (!mmarray)
                        goto done;
-               write_lock_irq(&tasklist_lock);         /* block fork */
+               read_lock(&tasklist_lock);              /* block fork */
                if (atomic_read(&cs->count) <= ntasks)
                        break;                          /* got enough */
-               write_unlock_irq(&tasklist_lock);       /* try again */
+               read_unlock(&tasklist_lock);            /* try again */
                kfree(mmarray);
        }
 
@@ -1006,7 +1006,7 @@ static int update_nodemask(struct cpuset *cs, char *buf)
                        continue;
                mmarray[n++] = mm;
        } while_each_thread(g, p);
-       write_unlock_irq(&tasklist_lock);
+       read_unlock(&tasklist_lock);
 
        /*
         * Now that we've dropped the tasklist spinlock, we can
@@ -1682,9 +1682,9 @@ static int pid_array_load(pid_t *pidarray, int npids, struct cpuset *cs)
 
        do_each_thread(g, p) {
                if (p->cpuset == cs) {
-                       pidarray[n++] = p->pid;
                        if (unlikely(n == npids))
                                goto array_full;
+                       pidarray[n++] = p->pid;
                }
        } while_each_thread(g, p);
 
@@ -1772,12 +1772,7 @@ static ssize_t cpuset_tasks_read(struct file *file, char __user *buf,
 {
        struct ctr_struct *ctr = file->private_data;
 
-       if (*ppos + nbytes > ctr->bufsz)
-               nbytes = ctr->bufsz - *ppos;
-       if (copy_to_user(buf, ctr->buf + *ppos, nbytes))
-               return -EFAULT;
-       *ppos += nbytes;
-       return nbytes;
+       return simple_read_from_buffer(buf, nbytes, ppos, ctr->buf, ctr->bufsz);
 }
 
 static int cpuset_tasks_release(struct inode *unused_inode, struct file *file)